Constraints on physical properties of stars in CzeV343 using MIST isochrones. We show three observables that we are trying to simultaneously fit: mass ratio of the two binaries constrained by LTTE (top left), effective temperature of star 2 in binary A (top right), and the four relative radii of individual components from our photometric model (bottom left). In these three panels, lighter and darker bands show 1 and 2σ confidence intervals of the constrained parameters. In the top right diagram, we show two gray bands corresponding to two choices of T_eff, prior. Bottom right panel: best-fit initial stellar masses. In all panels, lines show best-fit models as a function of isochrone age for two metallicities as explained in the legend. The best-fit model for each metallicity is marked separately for T_eff, prior = 7900 K (plus sign) and T_eff, prior = 10 800 K (star).